{"product_id":"eheim-jager-thermocontrol-aquarium-heater","title":"EHEIM Jager Thermocontrol Aquarium Heater | 100W, 200W \u0026 300W | Made in Germany","description":"\u003cp\u003eThe \u003cstrong\u003eEHEIM Jager Thermocontrol\u003c\/strong\u003e (also sold as the EHEIM Jager TruTemp) is the classic German-made aquarium heater trusted by fishkeepers for decades. Set your temperature once, and its precise thermostat holds it to within \u003cstrong\u003e±0.5 °C\u003c\/strong\u003e — for healthy, stress-free fish in freshwater, planted and marine aquariums.\u003c\/p\u003e\n\u003ch3\u003eWhy aquarists choose the EHEIM Jager\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in Germany\u003c\/strong\u003e — EHEIM build quality with a long track record.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise temperature control\u003c\/strong\u003e — adjustable from 18 °C to 34 °C, held to ±0.5 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRe-calibratable (±2 °C)\u003c\/strong\u003e — if your thermometer reads differently, you can fine-tune the heater to match it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDry-run protection (Thermo Safety Control)\u003c\/strong\u003e — switches off automatically if the heater is ever run out of water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecial laboratory glass jacket\u003c\/strong\u003e — bigger heating surface and even heat spread, with a built-in heat shield.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl lamp\u003c\/strong\u003e — shows at a glance when the heater is working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully submersible\u003c\/strong\u003e and watertight; fresh and saltwater safe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e~170 cm cable\u003c\/strong\u003e and double suction-cup holder included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhich wattage do I need?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eRecommended tank\u003c\/th\u003e\n\u003cth\u003eMaximum tank\u003c\/th\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003cth\u003eEHEIM art. no.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 W\u003c\/td\u003e\n\u003ctd\u003eapprox. 100 L\u003c\/td\u003e\n\u003ctd\u003eup to 150 L\u003c\/td\u003e\n\u003ctd\u003e319 mm\u003c\/td\u003e\n\u003ctd\u003e3614010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e200 W\u003c\/td\u003e\n\u003ctd\u003eapprox. 300 L\u003c\/td\u003e\n\u003ctd\u003eup to 400 L\u003c\/td\u003e\n\u003ctd\u003e406 mm\u003c\/td\u003e\n\u003ctd\u003e3617010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e300 W\u003c\/td\u003e\n\u003ctd\u003eapprox. 600 L\u003c\/td\u003e\n\u003ctd\u003eup to 1000 L\u003c\/td\u003e\n\u003ctd\u003e506 mm\u003c\/td\u003e\n\u003ctd\u003e3619010\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003eTip: if your room gets cold in winter or your tank sits near the upper limit, choose the next size up — the heater will work less hard and last longer.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e18 – 34 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl accuracy\u003c\/td\u003e\n\u003ctd\u003e± 0.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRe-calibration\u003c\/td\u003e\n\u003ctd\u003e± 2 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiameter\u003c\/td\u003e\n\u003ctd\u003e36 mm (all models)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable length\u003c\/td\u003e\n\u003ctd\u003eapprox. 170 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing\u003c\/td\u003e\n\u003ctd\u003eSpecial laboratory glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety\u003c\/td\u003e\n\u003ctd\u003eDry-run protection (Thermo Safety Control)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater type\u003c\/td\u003e\n\u003ctd\u003eFreshwater \u0026amp; saltwater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMade in\u003c\/td\u003e\n\u003ctd\u003eGermany\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eIn the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEHEIM Jager Thermocontrol heater\u003c\/li\u003e\n\u003cli\u003eDouble suction-cup holder\u003c\/li\u003e\n\u003cli\u003eInstructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eFix the heater with the suction cups in an area with good water flow, vertically or at an angle.\u003c\/li\u003e\n\u003cli\u003eKeep it submerged to at least the minimum water-level mark.\u003c\/li\u003e\n\u003cli\u003eWait about 15 minutes after placing it in the water before plugging in, so the glass adjusts to the water temperature.\u003c\/li\u003e\n\u003cli\u003eSet your target temperature and check it with a thermometer after a day.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cem\u003eSafety:\u003c\/em\u003e always unplug the heater before water changes or before lifting it out of the tank.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs \"EHEIM Jager\" the same as \"EHEIM Thermocontrol\"?\u003c\/strong\u003e\u003cbr\u003eYes — Thermocontrol is the current name of the EHEIM Jager heater line (also sold as Jager TruTemp in some markets).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use it in a marine \/ reef tank?\u003c\/strong\u003e\u003cbr\u003eYes, it is suitable for both freshwater and saltwater.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNeed electronic control for a very large tank?\u003c\/strong\u003e\u003cbr\u003eSee the \u003ca href=\"\/products\/eheim-thermocontrol-e-electronic-aquarium-heater\"\u003eEHEIM Thermocontrol e electronic heater (300W \/ 400W)\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eGenuine EHEIM product, shipped from Astra Aquatics, Chennai. Not sure which size fits your tank? Contact us and we'll help you choose.\u003c\/p\u003e","brand":"EHEIM","offers":[{"title":"100 W","offer_id":67582296490300,"sku":"3614010","price":3475.0,"currency_code":"INR","in_stock":true},{"title":"200 W","offer_id":67582296523068,"sku":"3617010","price":4199.0,"currency_code":"INR","in_stock":true},{"title":"300 W","offer_id":67582296555836,"sku":"3619010","price":4390.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0245\/9313\/7769\/files\/90139-1.jpg?v=1790491796","url":"https:\/\/indianaquarium.com\/products\/eheim-jager-thermocontrol-aquarium-heater","provider":"indianaquarium.com","version":"1.0","type":"link"}